Health · Body mass index

BMI calculator

Enter your height and weight to see your body mass index and where it falls.

Your measurements

Your BMI
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Healthy range18.5 – 24.9

Rough sheet

step-by-step
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How BMI is calculated

Body mass index is your weight divided by the square of your height (kg/m² in metric, or weight in pounds × 703 ÷ height in inches² in imperial). It's a quick screening number, not a diagnosis — the same BMI can mean something different for a bodybuilder with high muscle mass than for someone with less muscle, since the formula can't tell fat from muscle.

Frequently asked questions

A BMI between 18.5 and 24.9 is generally considered the healthy weight range, though it doesn’t account for factors like muscle mass or body composition.

Yes, toggle between metric (cm/kg) and imperial (ft, in, lb) at the top of the calculator.